### Abstract

Language | English |
---|---|

Title of host publication | Lectures on general quantum correlations and their applications |

Editors | Felipe Fernandes Fanchini, Diogo de Oliveira Soares Pinto, Gerardo Adesso |

Place of Publication | Cham |

Publisher | Springer, Springer Nature |

Pages | 183-199 |

Number of pages | 17 |

ISBN (Electronic) | 9783319534121 |

ISBN (Print) | 9783319534107 |

DOIs | |

Publication status | Published - 2017 |

### Publication series

Name | Quantum science and technology |
---|---|

Publisher | Springer International Publishing AG |

ISSN (Print) | 2364-9054 |

ISSN (Electronic) | 2364-9062 |

### Fingerprint

### Cite this

*Lectures on general quantum correlations and their applications*(pp. 183-199). (Quantum science and technology). Cham: Springer, Springer Nature. https://doi.org/10.1007/978-3-319-53412-1_8

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*Lectures on general quantum correlations and their applications.*Quantum science and technology, Springer, Springer Nature, Cham, pp. 183-199. https://doi.org/10.1007/978-3-319-53412-1_8

**Why should we care about quantum discord?** / Brodutch, Aharon; Terno, Daniel R.

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Research › peer-review

TY - CHAP

T1 - Why should we care about quantum discord?

AU - Brodutch, Aharon

AU - Terno, Daniel R.

PY - 2017

Y1 - 2017

N2 - Entanglement is a central feature of quantum theory. Mathematical properties and physical applications of pure state entanglement make it a template to study quantum correlations. However, an extension of entanglement measures to mixed states in terms of separability does not always correspond to all the operational aspects. Quantum discord measures allow an alternative way to extend the idea of quantum correlations to mixed states. In many cases these extensions are motivated by physical scenarios and quantum information protocols. In this chapter we discuss several settings involving correlated quantum systems, ranging from distributed gates to detectors testing quantum fields. In each setting we show how entanglement fails to capture the relevant features of the correlated system, and discuss the role of discord as a possible alternative.

AB - Entanglement is a central feature of quantum theory. Mathematical properties and physical applications of pure state entanglement make it a template to study quantum correlations. However, an extension of entanglement measures to mixed states in terms of separability does not always correspond to all the operational aspects. Quantum discord measures allow an alternative way to extend the idea of quantum correlations to mixed states. In many cases these extensions are motivated by physical scenarios and quantum information protocols. In this chapter we discuss several settings involving correlated quantum systems, ranging from distributed gates to detectors testing quantum fields. In each setting we show how entanglement fails to capture the relevant features of the correlated system, and discuss the role of discord as a possible alternative.

U2 - 10.1007/978-3-319-53412-1_8

DO - 10.1007/978-3-319-53412-1_8

M3 - Chapter

SN - 9783319534107

T3 - Quantum science and technology

SP - 183

EP - 199

BT - Lectures on general quantum correlations and their applications

A2 - Fanchini, Felipe Fernandes

A2 - Soares Pinto, Diogo de Oliveira

A2 - Adesso, Gerardo

PB - Springer, Springer Nature

CY - Cham

ER -